BodyTetrisWrapper.Twitpic.GetImageContentType C# (CSharp) Method

        private static string GetImageContentType(string imageUriString)
        {
            string imageContentType;
            if (imageUriString.EndsWith(ImageBmpFileExtension, StringComparison.OrdinalIgnoreCase))
            {
                imageContentType = ImageBmpContentType;
            }
            else if (imageUriString.EndsWith(ImageGifFileExtension, StringComparison.OrdinalIgnoreCase))
            {
                imageContentType = ImageGifContentType;
            }
            else if (imageUriString.EndsWith(ImageJpegFileExtension, StringComparison.OrdinalIgnoreCase) || imageUriString.EndsWith(ImageJpgFileExtension, StringComparison.OrdinalIgnoreCase))
            {
                imageContentType = ImageJpegContentType;
            }
            else if (imageUriString.EndsWith(ImageTiffFileExtension, StringComparison.OrdinalIgnoreCase))
            {
                imageContentType = ImageTiffContentType;
            }
            else
            {
                imageContentType = ImagePngContentType;
            }
            return imageContentType;
        }